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26篇 您的检索式:作者名="Large D J"
    题名 作者 年代 出处 被引量
1中国西南地区晚二叠世泥炭地净初级生产力及其控制因素显示文摘米兰科维奇旋回理论是古环境研究中重要的时间'度量'工具。文中以贵州普安糯东17号煤层和云南富源天佑10号煤层为例,对晚二叠世煤层的地球物理测井信号进行频谱分析,以获得其中的米兰科维奇轨道周期参数。研究发现,测井信号所反映出的煤层灰分含量变化受泥炭地发育时期的米兰科维奇轨道周期(123ka(偏心率):35.6ka(斜率):21.2ka(岁差))驱动。以煤层剖面中的轨道周期为时间尺度,进一步计算出晚二叠世泥炭地的碳聚集速率为54.3~77.0gC/(m2.a),对应的净初级生产力(NPP)为543~1540gC/(m2.a)。基于晚二叠世、晚石炭世和现代热带泥炭地的NPP与各个时期大气成分的对比结果显示,大气中的二氧化碳和氧气含量对陆相生态系统的净初级生产力具有关键性的控制作用。邵龙义 汪浩 Large D J 2011古地理学报2011,13,5:14
2早白垩世泥炭地净初级生产力及其控制因素——来自二连盆地吉尔嘎郎图凹陷6号煤的证据显示文摘现代泥炭地中蕴藏着巨量的碳,泥炭地生产力的高低会影响全球碳循环及全球气候变化。前人对全新世以来泥炭地生产力做了大量研究,但对前第四纪的'深时'阶段的泥炭地生产力则极少涉及,其主要原因是缺少精确的定年方法。以二连盆地吉尔嘎郎图凹陷早白垩世6号煤为例,利用地球物理测井信号进行频谱分析并获得煤层中米兰科维奇旋回周期参数(123 ka(偏心率):38.1 ka(斜率):22.1 ka(岁差)),将米兰科维奇旋回作为'深时'地层时间的'度量'工具,计算出6号煤层碳的聚集速率为35.1~38.9 gC/(m^2·a),进一步推算出其所代表的泥炭地的碳聚集速率为46.2~51.2 gC/(m^2·a),净初级生产力(NPP)为231~256 gC/(m^2·a)。将该计算结果与全新世同一纬度带泥炭地生产力水平比较,并结合前人研究成果综合分析影响因素,得出早白垩世泥炭地生产力水平主要受温度和大气中二氧化碳含量控制,而这两种因素又与气候相关联,则泥炭地生产力的研究可能对进一步了解古气候提供帮助。闫志明 邵龙义 王帅 Large D J 汪浩 孙钦平 2016沉积学报2016,34,6:8
3Suppression of host immune response by the core protein of hepatitis C virus: possible implications for hepatiits C virus persistence显示文摘Large M K Kittlesen D J Hahn Y S 1999J Immunol1999,162,2:2
4Silica-volatile interaction and the geological cause of the Xuan Wei lung cancer epidemic显示文摘Large D J Baruchspiro S K Tian L W 2009Environmental Science and Technology2009,43,:1
5Silica-volatile interaction and the geological cause of the Xuan Wei lungcancer epidemic显示文摘LARGE D J BARUCHSPIHO S K TIAN Linwei 2009Environ Sci Technol2009,43,23:1
6Large eddy simulation of the equatorial ocean boundary layer: diurnal cycle, eddy viscosity and horizontal rotation 显示文摘WANG D LARGE W G MCWILLIAMS J C 1996Journal of Geophysical Research1996,101,2:1
7Multilayer Reflectors in Animals Using Green and Gold Beetles as Con- trasting Examples显示文摘PARKER A R MCKENZIE D R LARGE M C J 1998J Exp Biol1998,201,:1
8Sediment-hosted 显示文摘Leach D L Sangster D F Kelley K D Large R R Garven G Al- len C R Gatzmer J and Wallters S 2005Economic Geology 100th An- niversary Volume2005,,:1
9High dynamic range characterization of the trauma patient plasma proteome显示文摘Liu T Qian W J Gritsenko M A Xiao W Moldawer L L Kaushal A Monroe M E Vamum S M Moore R J Purvine S O Maier R V Davis R W Tompkins R G Camp D G 2nd Smith R D and the Inflammation and the Host Response to Injury Large Scale Collaborative Research Programm 0,,10:1
10The alteration box plot: A simple approach to understanding the relationship between alteration mineralogy and lithogeochemistry associated with volcanic-hosted massive sulfide deposits显示文摘Large R R Gemmell J B Paulick H Huston D L 2001Econ Geol2001,96,5:1
11Low threshold ion-implanted Nd∶YAG channel waveguide laser显示文摘Field S J Hanna D C Large A C 1991ElectronLett1991,27,:1
12Silica - volatile interaction and the geological cause of the Xuan Wei lung cancer epidemic 显示文摘LARGE D J KELLY S SPIRO B 2009Environment Sci Technol2009,43,13:1
13Does perioperative systemic infection or fever increase surgical infection risks after internal fixation of femur and tibia fractures in an intensive care polytra- uma unit ? 显示文摘Large TM Alton TB Patton D J 2013J Trauma Acute Care Surg2013,75,4:1
14Sediment-hosted lead-zinc deposits: A global perspective显示文摘Leach D L Sangster D F Kelley K D Large R R Garven G Allen C R Gutzmer J Waiters S G 2005Econ Geol2005,100,:1
15Constraints on carbon accumulation rate and net primary production in the Lopingian (Late Permian) tropical peatland in SW China显示文摘Wang H Shao LY Large D J 2011Palaeogeography Palaeoclimatology Palaeoecology2011,300,1:1
16Radio transmission to and from underground coal mines-theory and experiment显示文摘Large D G Ball L Farstad A J 1973IEEE Transactions on Communication1973,21,3:1
17A cobaltite-framboidal pyrite association from the Kupferschiefer: Possible implications for trace element behaviour during the earliest stages of diagenesis 显示文摘Large D J Sawtowicz Z Spratt J 1999Mineralogical Magazine1999,63,3:1
18The influence of climate, hy- drology and permafrost on Holocene peat accumulation at 3500 m on the eastern Qinghai Tibetan Plateau 显示文摘Large D J Spiro B Fen'at M 2009Quaternary Science Reviews2009,28,:1
19查看详情显示文摘Dodd J Large D J Fortey N J Milodowski A E Kemp S 0,,:1
20Muhilayer reflectors in animals using green and gold beetles as contrasting examples显示文摘PARKER A R MCKENZIE D R LARGE M C J 1998J Exp Biol1998,201,:1
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